This specimen has two distinct apertures (one is quite visible at upper left). Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
This specimen has no distinct apertures through the test, which is not uncommon in members of this genus. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.